Gelatin-immobilized matrices as a new material for recording absorption spectra of chemical compounds

A method of sample preparation for recording electronic absorption spectra of insoluble chemical compounds is described. This method is based on the i mmobilization of compounds under study in thin gelatin layers. The method o ffers some advantages over conventional methods of sample preparation for s pectroscopic measurements. Sample preparation by the method proposed is des cribed for a number of inorganic and coordination compounds.